Improvement



W. B. SLOAN 8L E. H. SWEETSER.

lmprover'nent in Switch-Locks.

No. 131,310., Patented Sep. 10, 187.2.

/MRV

WILLIAM B. SLOAN AND EDWARD H. SWEETSER, OF HAMBURG, IOWA.

iM PROVEMENT iN SWITCH-LOCKS.

Spcciiieation forming part of ALetters Pat-ent No. lltl, dated September' l0, 1872.

Speciication describing a Railroad Switch- Fastening, invented by WILLIAM B. SLOAN and EDWARD H. SWEETsDR, of Hamburg, in'

the countyof Fremont and State of Iowa.

The invention consists in a railroad switchfastening, constructed with spring-jaws, which clamp the annular recess 0i' a bolt passed therethrough, and require to be separated by a he;r before the bolt can be removed.

Figure 1 is a side elevationof switch-stand; Fig. 2, a plan view thereof; and Fig. 3 is an inside view of the jaws of lock.

A in the drawing represents the frame which holds the slotted or hollow guide B. In this guide plays the switch-lever C, which is fulcrumed ate. E is the lock, that consists of two plates, e e, between which are the springjaws F F. These jaws have semicircular recesses f f, which clamp a bolt between them, and inclines f', against which the key turns, in order to hold them apart. In line with recesses f f of the jaws is a hole, b, which eX- tends through the side-plates e e and through the hollow guide B. In this hole is placed a bolt, G, having the annular recess g, in which the jaws F F become fastened.

The operation is as follows: The lever C bea ing brought into position, so that the switchrails joint with the track on which the next train is to pass,the boltGis inserted between the spring-jaws and through the guide B. This locks the lever and the switch-rails and prevents any change until the switchman comes around with his key and unlocks them. It is obvious that this lock may be rig-idly attached with equal effect to the lever or the stand, onel being merely a reversal ot' the other.

Having thus described our invention, what we claim as new, and desire to secure by Letters Patent, is-

A railroad switch-lock, E, provided with a pair of springjaws, F F, fastened between plates e e, and a` bolt, G, having a recess, g, the two adapted to be applied together in the manner described.

WILLIAM B. SLOAN. EDWARD H. SWEETSER.

YVitnesses to both signatures:

W. A. Srow, J. M. HAMMOND. 

